{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93365111075484ab2acbeda85130bc84bace7737b1b7527fd620b66db58f042d",
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    "signer": "0xD8559e85EF277FAbE27187436911900F533fE5A5",
    "userId": "143712772"
  }
}